Question

Part a) Identify the coordinates of the image of triangle ABC after a dilation about the origin by a factor of 2Part b) Identify the coordinates of the image of triangle ABC after a rreflection over the y-axis

Answer 1

Part A

Coordinates before dilation

A = (-2, 4)

B = (-2, 3)

C = (-4, 3)

Coordinates after dilation with a scale factor of 2

A' = (-4, 8)

B' = (-4, 6)

C' = (-8, 6)

Part B

Coordinates after a reflection over the y-axis

Coordinates of triangle ABC after a reflection over the y-axis by negating the x-axis.

A' = (2, -4)

B' = (2, -3)

C' = (4, -3)